Fool Proofing

I was wondering when it is appropriate to start foolproofing logic games? I went through each kind of game (actually through blueprint's curriculum, but I really disliked Blueprint's explanations, so I just signed up for 7sage). I have a general feel for each kind of game but am still not great and below average at LG.

I plan to start foolproofing the games from tests 1-35 (aim to do 1 or 2 a day) and on the side continue drilling with 7sage a few games a day (not necessarily foolproofing).

Does anyone have any input?